Furnace economizer, auxiliary boiler, and water screen combined



G. A. coLLlNs 1,790,199

FURNAGE ECONOMIZER, AUXILIARY BOILER, AND WATER SCREEN COMBINED Jan. 27, 1931.

Filed July 2, 1926 2 Sheets-Sheet l .H R. 5 4 6 Z w m V m 5./

l u, l ,t a 5 w Im. HUM. /mo 4 n v m n f/w n n 0. l 3. 8 IT .V ma 2. n r-v W m 1 1 d QA. comms BYv A TTORNEY.

G. A. coLLlNs 1,790,199

FURNACE ECONOMIZER, AUXILIARY BOILER, AND WATER SCREEN COMBINED Jan. 27, 1931.

Filed July 2, 1926 2 Sheets-Sheet 2 .llllll INVENTOR. QA. COLL /Ns A TTORNE Y.

Patented Jan. 27', 193i,

.Um-TIE STATE-S PA TfE-NTQFHCEY GLENVILLEA'. coLLINsgvorfLos ANGELES, CALiroRNiA, AssrGNoRi-ro COLLINS WESTERN GORPORATIONOF LosaNGnLEs, CALIFORNIA, RCORPORATIONOF'CALI- FORNIA i FURNRCE EOONOMIZER, AUXIIQiARY BGILRR, YAND WATERscREENooiv/iemnn Appi'ieanmmied my 2, i926. seriei'Nea'aoae?.

My invention relates toV improvements in auxiliary boilers7 :Water screens andv furnace oftiine p vecoiioinizers.

rlhe general object of niy inventioiiis to 4provide an improved[auxiliary 4boiler Wherein the `Water ydrums boiler Wallsl'f i' Anotherobject 'of iiiy invention istQpro- Vide .a vater screenvand Wall sectioifwherein 'are located ontsidethe parts may be. readilyfreinovedYto make any repairs that may be neeessary Without putting theboiler out of service for an undue length` AOther, objects parent from the following description taken in connectionwitli the accompanying 'drawings;- wherein :1'

Fig. l isa vertical Vcross sectionthrough a boiler showing several units of niy auxiliary boiler and 'ec-onon'iize'r applied .thereto Fig. 2 is an enlarged fragmentary section of the combustion chamberof the boiler showfY ofthe wall sections-removed -eombustioir chamber Walls;

--stoking port, and

ing more'clearly the details ofiny invention;

Fig. 3 is a section taken Online S--LlTigV 2 showing the method of constructing the coin-` busti-oii chamber walls, and also showing one .Figeis a cross section showing one of the Fig-.5 is a sectional v i'e'wof the'coinbustioii chamberlooking toward thelinner face of thefront'wall and vshowingthe manner' in whichthe `Water heating tubes of; the Water screen may be arranged on eitheriside of a Fig. 6 is a-diagrainmatic plaiiof a'boiler with kauxiliary boilers showing theu Various manners in which the steani'developed in the 'f aiixiliarygboilers inay be utilized.'

Referring tothe drawingby reference characters, I haveshown a Water tubeboiler A.5911's JCO-keep eoolsothata greater amountof l.heatmay be generated therein Without-overf my invention Willlbe `ap-` heating` and Withoutiinpairingor destroy' y ing theni.` v A Several vattempts which` inyolved the use of side Walls of tubesor pipe-s have beeiiinade with varyiiigsiiccess but all have been 'objec tionable la s be'ii'ig closely conibiiied'wi'th the boiler parts'or on account vdelimited circulation, hrnitediaccessibility and on account of requiringthe'complete shutdown of Va boiler for any replacement or repairs. l will; now describe' the construction' of' iny device jas'shovvii in the a c cornpanyin'g` drawings wherein I show .OP vand bottom of' a Waterfscreeiif and by cireulation tubes 23 toV provide a coii'iplete cycle ofeircnlation; The Water drum O'isconnectedto a source of Water supply by means of af pipe-Q4. I also.

provide a blow' oil' i"-alyn 2.5 whichY issuit'ably connected to the drinn and vat one end ofthe druin 2O I show a nianhole26.

di'unis spaced apart. Y These drums include a. ywater-'drinn2O and a steain'druinl coiinectedtogether by th-e Wall cooling 'tubes 22 The steam drum Qllisshown as'fprovided on its 'upper-side ,Withya vsteam pipe' 50',fa' safety valve 27 and a'inanho'le 28 in oue end.

Therwall cooling tubes 22 'extend frein out of the side of the Water drum QGthrough the combustion chamber Wall B Oiip theinner face of thewall for a distance and out throi'ig'h the Wall andinto the side of the steam drinn 2l;

VAlong' the'inner face of the Wall fOlthetubes 22 are'spaced approximately one tube apart andpreferably with the greater portionof their circumferential surface!exposed..' The y remainder ofthe tubes are embedded in the'V Walls of the combustion chainberf l have shown the niaiii`b olil er as'provided with four auxiliary boilers,v but it will' be understood that the number ofauxiliaryboill Pfr ers may be Varied withoutdepartin freni the features of nay invention.

the furnace sidewall .and forni steam which so that dry steamcan be -drawnloiflthe nozzle Vculata npwardginjthe tubes forniingpartof `will be disenoa'ged in the top druin 21l ofthe f-V Y l auxiliary boiler Whiehisofsubstantial'size if desired.'r The'k circulation 1 in @tliefoiitside tubesnjill be downwardto the inud dii1ni20 provide an auxiliary boiler forming apoit'ionVV kof the -side wall of -a furnace which is soA mounted on rollers o-r wheels that itcan be removed bodily or swung free of the furnace for repairs to itself or access to the furnace in which'case the disconnecting Vof the connec-A tions to the auxiliary boilerisall that is iequired before removing it bodily'froin Vthe furnace. V Such a construction is shown in vFig. l at the left where I have shown the lower .drum 2O supported ina cradle 3l while the upper drinn is supported by lpivotal engagement with an arni 32 'which is pivoted tothe boiler fitting at 33. Beneath the stack 34 at the right in E ig. l the upper drum is ar`V ranged in a stirrup 35 which is supported by a cross member' which is supported in turn by standards 37' arranged on base members 38. The lower drum 2O i-s supported onthe base'meinbers and is'held in yplace by a yoke '39. A'The base 'members'BS have wheels 40 thereon which may run on tracks 4,1.'

certain of the standards Si Mounted upon I show abacking plate 42 which has suit.

able insulating material 4&3 arranged Vtherefover. Upon this insulating material't, I

arrange refractory material @ifi which i-s preferab'ly in the nature of lvertically arranged blocks Which arerecessed at VAlto Vreceive the` -pipes`22. 'Ihe blocks 44 are recessed to re ceive vertical locking hars a6 and the contions, to'be presently described, have .been

removed the entirefauxiliary boiler can' be rolled awayfrom its positionY foi`" iepairs.

Y The refractory material 4S abovemaiid below t:he blocksv i-il need not be disturbed. when the auxiliary boiler is removed;

In l? ig. t I have shown a speciiicjarrangement wherein Ythe wall is composed of a plurality of units each unit including the backing plate 42aiid refractory block membeis'44- 'lllieserefractory members are re-l cessed asexp'lainedto fitfupon the eloi'igated VT headed members/I6 which are shown as Vmounted upon the plate 4 2. Each plate 42 preferably includes a pair of the T. members .i 46j and two groupsof superimposed blocks 44.*

Each ofthelplates 42 isprovide'dwith an eyeimemberafwhich maybe: engaged by lifting device 48` (see'Figl) mounted on a trolleyfl-Q. AThe plates arealso provided with From'tlie foregoing u Y l apparentlthat a section of theblocks 4a* and their associated part-'sp' can belifted freeV of the tubes Vsothat quick* access maybe had to one or more tubes for the purpose fof renew-Y I angle members t'luby which Ithe'@plates may v be connected together.

` description itwill be V or reducing valves imain boiler;

ing the tubesfrom the outside or inside of f boiler or any portion ofthe sides, it can be used as a closed feedw'ater heater in which the water level is maintained iii circuit with the boiler Afeed lines to provide what might be termed furnace economizei lt Sl als@ possible in a boiler employing` several of these auxiliary boilers, to use a portion of them as feed lwater heaters andaportioni as auxiliary boilers. Vhen used as auxiliary'boilers, itis possible to-operate at any pressure desired and independent of the pressure maintained on the main boiler. i

Thel usefulness of this idea might be illustrated as follows: Suppose the main boiler Iis operating at 400 pound working pressure delivering'itssteam toa turbine and that boiler auxiliaries such as pumps, etc., are taking their steam from different stages bled from the turbine, say 150 pound pressure. A boiler ,equipped with niy `anxiliaryboilers would use one or more of the auxiliary units at 150 vpounds pressurefor operating the auxiliaries and other units could be used asfeedwater f heaters or economizers. Also it wouldbepossible to use steam from the auxiliary boilers at varying pressurefor processworlr instead ofbleeding turbines 'or using exhaust steam taking steam from the vWhen it isfdesirous to use my invention as an auxiliary boiler'for Vrunning apump, 'a sinallengine, etc., water is fed to thelower v drum 20 by ,a water supply pipe 24. The cirstruction is such that after the pipe connecculatio'n is through thetubes 22th the drum `2il`thence down the pipe' 23 to the drum 20.

`The 'steam is .disengaged in a drum 21`andl passes'througha pijpe-5Q.' This pipe 50 has a valve 5l thereon 'which controls communiiioo by the auxiliaryjboilerwith 'the steani'f'rom theI inain boiler, the ,valvev 51v and also another valve 541 (to be presently described) are closed` and a valve 'is opened to allow thepipe 50 to communicate withthe pipe 56 which" is in communication `with the `main pipe 57 Vfrom the main boiler f If it isl desiredto use my invention as Va Vfeedwater heater for the main boiler supply the valve 63 of the main boiler water supplyl pipe line 6 4 is closed as'are 'also valves 5l and 55 and the valve "t'is then opened. VThisallows the waterto 'flow into thedrum Q fro'm the supply pipe 24 throughfthe tub`es'f22 wherein. it is heafl, all@ in@ @hef dllllm, 21 thence throughfthe pipef G 5fand' through pipe 6'6'intoth`e main boiler; i

The aaxiiiary biieeis to te Built affronta shells or forged steelv Aheaders z into v which would be expanded standard boiler vtubesof:

. suitable size and curvature. The` drums would have manholes or handholes for access in cleaning and would have proper blow down connections.

Having thus described myv invention, I claim:

1. In a device of the class described, a fire chamber including a .side Wall, ay boiler including -Water circulating tubesV passing through independent apertures in saidwall,

said boiler being movably mounted whereby it may be bodily movedfrom the fire chamber. 2.. In combination, a lire chamber defined sin part by a side Wall, aboiler incli'iding tubes passing through' said Walt-and gexposed throughout a substantial portion1 ofV their'V length tothe interior of said fireV chamber, i

drums in Which said'tubes are engaged and means exterior to said fire chamber. connecting said drums, said tubes andavall being Vso Vrelated as to enable the Withdrawaly of said tubes from the fire chamber, a frame upon which said boiler is 'mounted and means'to transportably'support 'sa-id frame, said means including rollers and a track on Which said rollers move.

In combination, a vlire chamber-including a side Wall, a boiler including spaced v drums and tubes connecting said drums, said tubes passing through said Wall and exposed throughout a substantial portion of their length tothe interior of said re chamber7 a 4 frame, said boiler and a portion of saidWall lbeing supported on said frame, and' means to transportably support said frame. k a 4. In combination, a lire chamber defined in part by a side Wall7 a boiler includingA aY Y bank of tubes, each tube passing through said Wally at spaced points and exposed throughout a substantial portion of its length tothe interior of said lire chaniber,a1i upper drumV v to which the upper end of said tubes are vcon*- signature.

nected, a lower drum to Which the lower end of said tubes areconnected, said drums being Y arranged without said iire chambeijV and meansincluding spaced tubes arranged exte-V rior to said ire chamber connecting said ydrums,'saidrbanl of tubes and Wall being so v ielatedfas to enable the Withdrawalof the tubes of lsaid bank from the fire chamber and `means to support said drumsin spaced'rela-A tion.

In testimony GLENvinLE A. .ooLLiNsl `Whereof,.I hereunto i A 

